[Talk-at] JOSM verwendet falsche Java VM

[Clemens Schüller]

Hallo!

Ich verwende die latest Version von JOSM unter Debian

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[mente at antares: ~]% cat /etc/apt/sources.list.d/josm.list
deb https://josm.openstreetmap.de/apt alldist universe
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Wenn ich nun JOSM starte, wird Java-Version 1.7.0_79 als VM verwendet,
obwohl die alternatives anders konfiguriert sind.

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[mente at antares: ~]% update-alternatives --config java
Es gibt 2 Auswahlmöglichkeiten für die Alternative java (welche /usr/bin/java bereitstellen).

  Auswahl      Pfad                                            Priorität Status
------------------------------------------------------------
  0            /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java   1071      automatischer Modus
  1            /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java   1071      manueller Modus
* 2            /usr/lib/jvm/jdk-8-oracle-x64/jre/bin/java       318       manueller Modus
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[mente at antares: ~]% update-alternatives --display java
java - manueller Modus
  Link verweist zur Zeit auf /usr/lib/jvm/jdk-8-oracle-x64/jre/bin/java
/usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java - Priorität 1071
  Slave java.1.gz: /usr/lib/jvm/java-7-openjdk-amd64/jre/man/man1/java.1.gz
/usr/lib/jvm/jdk-8-oracle-x64/jre/bin/java - Priorität 318
  Slave java.1.gz: /usr/lib/jvm/jdk-8-oracle-x64/man/man1/java.1.gz
Gegenwärtig »beste« Version ist »/usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java«.
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Das Startscript für josm sieht folgend aus:


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#!/bin/sh
# Simple wrapper script used to start JOSM in Debian
set -e

# First, the alternative (if known to work) or users preference as defined by $JAVA_HOME. Next, use OpenJDK or Oracle's proprietary JDK.
# Override to a specific one using $JAVACMD
ALTERNATIVE_JDK="`readlink -n -f /etc/alternatives/java`"

# Let's get the current architecture -- needed for multiarchified Java
ARCH="`dpkg --print-architecture 2> /dev/null || true`"

# If OpenJDK is only available headless, do not try it
if dpkg --get-selections 'openjdk-*-jre' | grep install$ > /dev/null ; then
	JAVA8_CMDS="/usr/lib/jvm/java-8-openjdk/bin/java /usr/lib/jvm/java-8-openjdk-$ARCH/bin/java /usr/lib/jvm/java-8-oracle/bin/java"
	JAVA7_CMDS="$JAVA_HOME/bin/java /usr/lib/jvm/java-7-openjdk/bin/java /usr/lib/jvm/java-7-openjdk-$ARCH/bin/java /usr/lib/jvm/java-7-oracle/bin/java"
else
	JAVA8_CMDS="/usr/lib/jvm/java-8-oracle/bin/java"
	JAVA7_CMDS="$JAVA_HOME/bin/java /usr/lib/jvm/java-7-oracle/bin/java /usr/bin/java"
fi

JAVA_OPTS="-Djosm.restart=true -Djosm.home=$HOME/.josm-latest -Djava.net.useSystemProxies=true $JAVA_OPTS"

for jcmd in $JAVA8_CMDS; do
	if [ "z$ALTERNATIVE_JDK" = "z`readlink -n -f $jcmd`" ] && [ -z "${JAVACMD}" ]; then
        JAVACMD="$jcmd"
    fi
done

for jcmd in $JAVA8_CMDS; do
    if [ -x "$jcmd" -a -z "${JAVACMD}" ]; then
        JAVACMD="$jcmd"
    fi
done

for jcmd in $JAVA7_CMDS; do
	if [ "z$ALTERNATIVE_JDK" = "z`readlink -n -f $jcmd`" ] && [ -z "${JAVACMD}" ]; then
        JAVACMD="$jcmd"
    fi
done

for jcmd in $JAVA7_CMDS; do
    if [ -x "$jcmd" -a -z "${JAVACMD}" ]; then
        JAVACMD="$jcmd"
    fi
done

if [ "$JAVACMD" ]; then
    echo "Using $JAVACMD to execute josm-latest." || true
    set +e
    while true; do
        $JAVACMD $JAVA_OPTS -jar /usr/share/josm-latest/josm-latest.jar "$@"
        if [ "z$?" != "z9" ]; then
            break
        fi
        echo ">> restarting josm..."
    done
else
    echo "No valid JVM found to run JOSM." || true
    exit 1
fi
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Wo müsste man da drehen, damit Oracle Java 1.8 verwendet wird?


-- 
Beste Grüße, Clemens Schüller